HDOT Climate Resilience Action Plan | May 2021

B.4 FEDERAL/NATIONAL GUIDANCE B.4.1 AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS (AASHTO) » Resilient and Sustainable Transportation Systems Technical Assistance Program. Accessed July 27, 2020 from: https://environment.transportation.org/center/rsts/products_programs.aspx This website serves as a portal for state departments of transportation (DOT) to exchange information on resilience and climate change, including the findings of workshops and symposia on extreme weather impacts on the transportation system. » Validation of Tsunami Design Guidelines for Coastal Bridges. Transportation Pooled Fund Program, Lead State: Oregon DOT. 2020. Accessed July 27, 2020 from: https://www.pooledfund.org/Details/Study/556 Tsunami design guidelines have been proposed by many transportation agencies; however, the reliability of the numerical results is unknown due to a lack of experimental data needed for verification and validation. This project conducted experiments to provide data to verify and validate the numerical results to assess the accuracy of the load prediction equations. Draft guidelines have been developed. » AASHTO Guide Specifications for Bridges Vulnerable to Coastal Storms . 2010. ISBN Number: 1-56051- 429-9. Accessed July 27, 2020 from: http://aashto-specifications.blogspot.com/2011/07/aashto-guide- specifications-for-bridges.html Examines limit states, load combinations, and design forces against bridges in coastal areas and provides comprehensive specifications for the design of bridges vulnerable to coastal storms. B.4.2 FEDERAL HIGHWAY ADMINISTRATION (FHWA) » Integration of Resilient Infrastructure in the Emergency Relief Program. Memorandum from Hari Kalla, Associate Administrator for Infrastructure, and Gloria Shepherd, Associate Administrator for Planning, Environment, and Realty to Associate Administrators, Division Administrators, and Directors of Field Services, October 11, 2019. Washington, D.C. Accessed July 27, 2020 from: https://www.fhwa.dot.gov/specialfunding/er/191011.cfm Memorandum to clarity on how states can incorporate resilience into their Emergency Relief (ER) program funded projects. ER program funds that are provided following a disaster may be used for repairs that improve the long-term resilience of the Federal-aid highways if, 1) they are consistent with current standards, or 2) the state DOT demonstrates that the resilience feature is economically justified to prevent future recurring damage. For this latter case, if rebuilding to current standards does not reduce risks to acceptable levels, facilities being repaired under the FHWA ER programmay use ER funds for betterments (added protective features) if the state DOT can demonstrate that that the feature is economically justified to prevent future recurring damage. » Using an LCP (Life Cycle Planning) Process to Support Transportation Asset Management: A Handbook on Putting Federal Guidance into Practice. 2019. Report FHWA-HIF-19-006. Accessed July 27, 2020 from: https://www.fhwa.dot.gov/asset/guidance/hif19006.pdf LCP is an essential aspect of transportation asset management and a required component of risk-based TAMPs under Federal regulation (23 Code of Federal Regulations [CFR] 515.5). This regulation defines LCP as “a process to estimate the cost of managing an asset class, or asset sub-group over its whole life with

HAWAI‘ I HIGHWAYS | CLIMATE ADAPTATION ACTION PLAN ( B-5 )